Add codegen option for branch protection and pointer authentication on AArch64

The branch-protection codegen option enables the use of hint-space pointer
authentication code for AArch64 targets

1 files changed, 22 insertions, 0 deletions

diff --git a/src/test/assembly/aarch64-pointer-auth.rs b/src/test/assembly/aarch64-pointer-auth.rs
new file mode 100644
index 00000000000..e778e67e1b3
--- /dev/null
+++ b/src/test/assembly/aarch64-pointer-auth.rs
@@ -0,0 +1,22 @@
+// Test that PAC instructions are emitted when branch-protection is specified.
+
+// min-llvm-version: 10.0.1
+// assembly-output: emit-asm
+// compile-flags: --target aarch64-unknown-linux-gnu
+// compile-flags: -C branch-protection=pac-ret+leaf
+// needs-llvm-components: aarch64
+
+#![feature(no_core, lang_items)]
+#![no_std]
+#![no_core]
+#![crate_type = "lib"]
+
+#[lang = "sized"]
+trait Sized {}
+
+// CHECK: hint #25
+// CHECK: hint #29
+#[no_mangle]
+pub fn test() -> u8 {
+    42
+}